A:AnswerLance,
To my knowledge the full Canon warranty applies to this camera bundle.
If not I was mislead and can't imagine them selling it any other way since it is a new camera and not a refurbished one.
A:AnswerWith my pictures the built in flash is fine. If you are going to take professional pictures get a midrange flash and light meter. There is a rèmote flash connector.
A:AnswerYes they are going to be the same camera. Usually when you buy a bundle, you get discounts on the products included in the bundle. I purchased the one at best buy and am very happy with it.